Hi Michael, On Tue, Mar 26, 2024 at 8:59 PM Michael Schmitz <schmitzmic@xxxxxxxxx> wrote:
thanks - I'm pretty sure tried that early on but botched it by excessive locking (i.e., keeping preemption disabled when calling get_zeroed_page()!). So I don't think you do use too much locking here. I'm running stress tests for a while now, without any trouble so far. Need to add a few other stressors back in, and repeat all that on a slower ARAnyM instance but I'm quite confident you found the solution. Geert: with this data race fixed, it does appear my RFC patch is no longer needed. Finn or I probably ought to prepare a new RFC patch to go on top of your preemption patch. There is no commit ID to use in a Fixes: tag for that one, correct?
As my preemption patch was not applied to any tree yet, I'll just fold in any fixes. I think this does deserve Co-developed-by tags, so please make sure to include your SoB in any fixes. Thanks! Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds